Encyclopædia Britannica, First Edition/Chio
CHIO, Chios, Xio, or Scio, an Asiatic island, lying near the coast of Ionia, in Natolia or Lesser Asia, about one hundred miles west of Smyrna. It is called by the Turks Sakisaduci, and is about one hundred miles in circumference; being chiefly inhabited by Christians of the Greek church, who are said to have three hundred churches in the island.